Home / 12,156.57-18,235.73-4,258.19

Finding the Fourth Proportional to 12,156.57, 18,235.73 and 4,258.19

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Solution

The fourth proportional to 12,156.57, 18,235.73 and 4,258.19 is: 6,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.57 : 18,235.73 = 4,258.19 : x
  2. Step 2: Convert to fraction form
    12,156.57/18,235.73 = 4,258.19/x
  3. Step 3: Cross multiply
    12,156.57x = 18,235.73 × 4,258.19
  4. Step 4: Simplify right side
    12,156.57x = 77,651,259.36
  5. Step 5: Solve for x
    x = 77,651,259.36/12,156.57
  6. Step 6: Final answer
    x = 6,387.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.